Reply To: Current limit Stepper drivers drv8825

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Well that makes a ton of sense. Much more clear now.
I know most of the common NEMA 17’s at full specs are 100C, way to hot to be useful for us. So we are using them at about half full power just because of the heat issue…I think.

So .7 to 1 is our useful range, unless you use the aluminum mounts (good heatsinks and won’t warp). Then max out the drivers with good active cooling!?

So…the next question. How much extra power is really at the top end of that torque curve? If it takes an extra 50C of heat to get 5% more power, not worth the hassle.